In article C4bnb.197307$pl3.160437@pd7tw3no, Tony Hwang wrote:


Doug Miller wrote:

In article Wl3nb.194451$9l5.193936@pd7tw2no, Tony Hwang
wrote:

Tom Horne wrote:

As long as the lamps are incandescent the wattage of the
lamps can be used as the VA of the lamps.


VA is not equal to Watts. Reason? Power factor, Cosine Phi.
As far as math is concerned.


As far as a purely resistive load such as an incandescent lamp is concerned,
they are indeed equal.

Hi,
Since you used word PURELY, even the filament of incandescent bulb has
inductance, how could it be pure R without X? I still stick my gun on
my statement. Watts is not equal to VA, better give some margin.
Tony

OK, why don't you do the math, and tell us how much difference there is
between watts and volt-amperes for, say, a 60-watt incandescent light bulb?

--
Regards,
Doug Miller (alphageek-at-milmac-dot-com)